Fuel-supply valve for carbureters.



vv.1. sown/IAN. y l FUEL SUPPLY VALVE FOR CARBURETERS.

APPLICATION FILED M.AY26|1917.

1,29%;Q4L l PatentedApr. 8,1912),

muren srnrns PATENT OFFICE.

WILLIAM zr. eowMAN, or cmodcamroanm. I

'l o att whom 'it may concern:

Be it known that I, lVILLIAM J. BowMAN, a citi-zen of the United States, residing at Chico, in the county of Butte and State or' California, have invented certain new and useful Improvements in FueLSupply Valves for Carbureters; and I hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specication.

This inventlon 1s a novel improvement 1n valves for carbureters particularly designed I orjutilizing heavy hydro-carbons, such as kerosene, for fuel.

A further object of the invention 1s to `pro` vide "novel valve y'means whereby the fuel delivered to the'carbureter 1s controlled in such. lmanner that the `carbureter can be started and stopped on gasolene, and as a heavier or richer fuel is desiredkerosene will be admitted together' with the gasolene, and

the quantity of kerosene may be gradually inereasedas the gasolene is diminished until if desired all the gasolene may becut oif and and only kerosene employed, but in closing the valve the gasolene will be again supplied.

An important feature of the invention is a novel arrangement'of a two-fuel-main valve and an auxiliary adjusting valve so arranged as to be controlled by 011e movement of the main valve, and readily operated from the d rivers seat by the usual fuel regulating dev1ces; and so arranged as to give an initial supply of lgasolene and bymerely shifting vthe main valve, the supply of fuel may be changedvfrom gasolene to kerosene, or a mixture thereof may be supplied; 'and such valve is capable of supplyingv any grade of -fuel at thewill of the operator and as the vva-lvevis opened the fuely is enriched and as,

f. ft is closedthe heavier fuel supply is lessened until just before closing only gasolene is sup-- plied. The'auxiliary valve is also soarra-nged that it canl be adjusted primarily whiletheman valve is at rest, and there after the shifting ofthe main valve will au ltomatically vary the position of the auxiliary valve relative thereto, so as to control the fuel supply in a most eiective manner.

l will explain'the invention with reference tothe embodiment thereof illustrated iu the FUEL-SUPPLY VALVE FOR CARBURETERS.

Specification of Letters Patent.

Patented Apes, 19.19.

Application filed May 26, 1917. Serial No. 171,192.

operating the main controlling valve.

, Fig. 5 is an enlarged detail section through the, main controlling valve and its partson i line 5---5 Fig. 3. i

Figs. 6, 7, 8, 9, and 10 are detail diagran'is illustrating the 'various positions of the main valv rlhe carbureter casing, air heating chamf ber and fuel and air passages therein; and

the manifold, and connections thereof, may

be of any suitable construction and are not therefore claimed herein, the present application having particularly referenceto the fuel supply and valves for regulating same.`

In the example shown in the drawings two float chambers 6 and 7 are attached to or formed on the wall o f the chamber 4 adjacent the opening 4i. Each of these chambers is provided with the usual ioat (indicated at 6, 7a respectively) and connections to regulate the supply of liquid fuel to such chamber sov in the usual manner, and which do not re quire anydetailed illustratlon herein; for y,

example, a supply of gasolene may he maintained in the chamber 6, and a vsupply' of kerosene he maintained in the chamber 7.

Between the chambers 6 and 7 is a valve chamber 5t in which is fitted a rotary valve y 5, that extends -outof and above the upper end of chamber 5 and is provided with a suitable handle y which it can be turned.

Said valve 'e isprovided with an internal bore 5c and with a transverse port 5d the opposite ends of which port are respectively adapted to communicate with ports Gd and 7 connecting the chamber 5 respectively with the chambers 6 and 7, see Figs. 2 and 5. The said portsare sorelatively arranged that by moving the vvalve 5 in one direction gasolene -will first bejsupplied; in the central intermediate position ofthe valve both gasoleoe and 4kerosene would' be supplied; and by jsufliciently 'moving the valve in the same thereturn :movement bureter. The valve '5 is provided witha lateral port "5f above the seat 5e of'valve, and said porto conneets-With a pipe 5*? leading tothe spreyj'noezlees shown.

The'fportsfydand'7d are relatively so arranged 'that;. about onefthird of the com-"- plete movement oi the valve' will change .Y l5f" registers-fu ly with the gasolenepo'rts.

"thefuel from kerosene to gasolenehervice l, ene from Gf to R-Fig. 5 and kerosene versa "end during about tvvotlriirds'` of the ermissible movement ofthe valve 5 aso- K toil'lig. 5 will beeupplied.

the upperl end of the bore' The stem 8* of valve 8 extends above and The# proper amount. offuel supplied through the valve 5.is regulable byfan auxillaryor seeondary valve 8 Within' the valve 5. As shown thisvelveiis a needle valve and adapted to engage aseat 5? in bore 5,

audit may be formed on the inner end ol? a stem 8 having a threaded engagement with outside oi the valve 5 and through a bracket or clamp 8e 'which may he attached' to the` wall of the chamber 4, or other' suitable adjacent fixed support. The bracket 8. is

' preferably slit and may be clampedupon the stem of the valve 8 by ineens of a screw 8f; and after the valve 8 is properly" ad justed in valve 5 it can be'rigidly fastened in adjusted position leaving?,- the .valve 5 free to be rotatably shifted or turned.

By adjusting the needle valve relative to seat 5 and then looking the needle valve against rotation, it follows that the extent of opening ofthe needle valve will be .varied' by turning the mainvalve .either backwardu or forward, as the needle valve is held stationary With the body of the earbureter and cannot rotate with the main valve; therefore the shifting of the mein valve to diilerent positions automatically' varies' the. needle valve opening. I lind that kerosene requires a smaller opening of the valve than geso- Iene,v andthe'desired variation of the needle valve is automatically accomplished by shift-1.

inthe main valve.

he valve lever 5b should be connected ly suitable means with anoperating leverja jecentthe drivers seat; As diagremmetin callyillustrated;.in 'lge lever 5" is con. neet/ed by.a,ijod='9^toa lever 9 pivoted` on a suitable' su port and provided with an index `plate 9 W ich indicates the nature ofthe `akmixtnre that -wouldbe supplied to the ato- R on the valve, Fig. 6n registers with` imaginary point indicated atl?? 1n' p should be open about J3 of e. revolution.

A4remains closed vlout thegusolene portl r the needle valve 8. This produc "which is suieiently y valve 5 is shift4 "narypoint L" which lposition fthen' openedgfubo running.v l With this construptionftheg Leeeeoi mizer or carbureter. '.When leve valve 5). are in a central position, in@ ieated in Figs. 4-5) both kerosene'and gas'olene4 will be supplied, When'lever 9:is turned. to4 the left kerosene only Will be supplied, and: 10 when turnedto the right gasolene onlyvvill Y be' supplied; j ,L

rllhus a lsrge range of variation of Vth fuel/dj. supplyis provided by adjusting 'theivalveW-l'Vv 5 by lever 9. i j "flo-. Various operative positions ofythejxnainrjf valve are illustrated `diagramn'iatieally.` Figs. 6 to 10-innlusive. In starting the In chine lever 9 should be shifted to thefpointf" R sov that the imaginary .point indicated it Bol The kerosene ort 6d is then closed" lout` yThis gives a 'very rich mixtureof @Selen and air and in this position the nee le shifting lever 9 to the point G 'thegve is turned so that the imaginary poi'n isters with the imaginary Oint cated in Fig.- 7, then the'l erose'n' open butvsuch shifting ofthevalve au the needle valve to close about 1% *of and thus restricts the' tlowofftlief mixture1 ofigasolene and, airy"- i be used to run the engmeongasolene.

nary point M""registers with the na'ginary.`

point gl?, 'as indicatedfin'l 8.@k I npfthis `position both kerosene and,fgasolenefports ene .result is a mixturefokerosene and airgf clause :.fpr 510W nary point v a very lean.explosive` l 4onomieal for and air which ishiglily to/convert the oil or fuel into a gaseous mixture before the same is delivered into the inlet ports ot the engine.

(7 poration.

The air is sucked in at the inlet 5*, and, the rush of air past the nozzle 51 creates a isnt-,tion which draws the proper supply ot fuel from the float chamber.

By having 'the' auxiliary needle`-valve 8 arranged within the main controlling valve 5 I obtain the` desired adjustment of the needle valve simultaneously with and in suitable proportion to the adjustment of the main valve; both valves being operated by one movement ot' the main valve 5 which is controlled by the driver. 'By Simply shift-` ingwalve 5 can obtain either gasolcne or lkerosene, or a lean-or rich mixture of the two in any desired proportion The control of the fuel supply by a single main valve which varies the needlevalve adjustment is important and the control'of both fuel supplies and needle-valve by one main valve is also important. The change -from one fuel to another can be made in,

stantly, or the relative amount of high and low grade fuel in the mixture can be varied at will by the driver. Further the engine is not only started on gasolcne but is returned to gasolene when it is desired to stop it, thus ,realizing every advantage of a gasolene operated carbureter, and' in addition enabling kerosene to be turned' on when desired and without the operator having to set or manipulate any two valves in so doing; all the control is accomplished by simply moving the leveri) or single valve 5.

The needle-valve Fl is first adjusted to suit the desired no rmal running of the engine and then locked so that it cannot rotate with the main valve and the latter valve contains the seat for the needle-valve it is 'obvious that as the main :valve is shifted the control of the needle-valu, adjustment relative to its seat is correspondingly altered; aud the main valve not only regulates the supply but also changes the iuel from lrcrosone to gasolene, and vice versa, and if adjusted at center furnishes both fuels in equal quantities. 1 -l/Vhat l claim is:

l. l'n combination two fluid supplies, a

` main valve provided with ports for cstab- Amain valve; a secondary'valve adapted to regulate said port and adjustable independently of the main valve, and means for lock# ing the secondary valve when adjusted relatively to the main valve, the movement of the main valve varying the relative-adjustment of the said secondary valve, substantially described.

2. In a carburetor, a fuel supply, a main valve' controlling the `'fuel supply; and a secondary valve within the main valve for regulating the supply, the extent of opening movement of the main. valve varying the relative adjustment of the secondary valve.

3. lua carburcter a chamber, an. inlet tosaid chamber, a fuel supplyconnected with said inlet, armain valve for controlling the fuel supply; and a secondary'valve within the main valve *for regulating the supply, the extent of opening lmovement of the main valve varying theprelative adjustment of the secondary valve.

4. In combination, a valve chamber communicating with two supplies, a main valve in said chamber controlling both supplies, and a secondary valve controllingthe flow of fuel through the main valve, said sec- 1 ondary valve being adjustable inde endently 95 of the main valve; the operation o the main valve varying the relative adjustment of the secondary valve.` l

5. ln combination, two float chambers, a valve 'chamber communicating with both Heat chambers, a main valve 1n said valve chamber controlling both communications, and a secondary valve Within the main valve for controlling the flow of fuel through the main valve, said secondary valve being adjustahle independently of the main valve 'for regulating purposes; the operation of the main valve varyingV the relative adjustment of the'secondary valve.

V6.` In combination, two float chambers, a valve chamber 'communicating with both float chambers, a main valve in said valve chamber having ports adapted to establish communication with 'either or both of said oat chambers, and an outlet from said valve chamber; with asecondary valve controlling the passage of fuel through the main valve; the movement of the main valve varying the relative adjustment of the said secondary valve.

7. ln combination, two float chambers, a valve chamber oommunicath'ig! with both float chambers, a main valve in said valve chamber having ports adapted to establish communication with either or bothof said 125 t'uel chambers, an outlet port from said valve chamber; and a secondary valve within `the main valve controllingA the passage of l .Ilshmg communication with either or v banish fue] therethfoulghzi'the.melent ef the main from the main -valve-and ineajn` for adj'ust- 10 valve varying the relative adjustment l*of ngthe secondary vgllv'e;v-thejmovement of s aid secondary valve. Y themain valve va ry1ng the relaJlYf.adjust-` of the supplies inthe will of the c apematoz",` -an `outlet; portleading; fromv the meln-xLlve,` :mi .9 @mslm gvly, contrqlhqg .the outlet 

